Lg Chem, Ltd

Lg Energy Solution, Ltd.

Cha Hun Ku

Jung Kwan Pyo

Sung Jong Kim

Sang Kyun Lee

Tae Kyu Kim

Tai Jin Jung

Su Taek Jung

Seok Jin Kim

Byeong Kyu Lee

Byung Kyu Jung

Se Woo Yang

Suk Ky Chang

Duk Hyun Ryu

Sang Ho Bae

Sang Hyun Koo

Won Nyeon Kim

Min Soo Park

Yoon Tae Hwang

Young Seok Baek

Chang Min Han

Duck Hoe Kim

Jae Hwa Choi

Hun Bum Jung

Ji Hun Hwang

Soon Ho Ahn

Se Ra Kim

Hyo Sook Joo

Je Jun Lee

Jung Jin Kim

Jin Yong Lee

Ju Hyeon Cho

Young Soo Kim

Ji Young Hwang

Sang Hun Kim

Dong Hyun Kim

Chang Sun Han

Joon Sung Bae

Dong Jo Ryu

Byoung Yun Kim

Nak Gi Sung

Chang Wan Koo

Soo Hyun Ha

Ju Hyun Kim

Hang June Choi

Soo Ryoung Kim

Hye Lim Shim

Kun Ha Park

Jeong Yeon Kim

Kyung Taek Kim

Min Cheol Choi

Sei Lin Yoon

Jung Joo Kim

Min Wook Kim

Jung Hoon Lee

Seok Koo Kim

Hong Kyu Park

Sung Min Hwang

Kyung Jae Lee

Sang Baek Ryu

Soon Kwan Kwon

Kwan Soo Lee

Yong Jun Lee

Kieun Sung

Eui Kyung Lee

Hyun Kyung Shin

Gyung Soo Kang

Joo Young Chung

Hong-Jeong Kim

Dae Bong Lim

Jin Gon Kim

Hong Jeong Kim

Ji Su An

Sangkyun Lee

Baeck Boem Choi

Minwook Kim

Discussed is a lamination device for bonding an electrode and a separator of an electrode assembly to each other. The lamination device includes: a transfer part configured to transfer the electrode assembly; a heating roller part configured to heat the electrode assembly transferred by the transfer part; and a rolling roller configured to roll the electrode assembly heated by the heating roller part so that the electrode and the separator are bonded to each other, wherein the heating roller part comprises a plurality of heating rollers configured to press and heat a surface of the electrode assembly at the same time, and the plurality of heating rollers sequentially press the surface of the electrode assembly and simultaneously heat the surface of the electrode assembly so that the electrode assembly gradually increases in temperature.

Lamination device and method and secondary battery manufacturing equipment comprising lamination device

An ultrasonic welding device for a secondary battery is provided. The ultrasonic welding device is configured to weld an overlapping surface of an electrode tab and an electrode lead in an electrode assembly. The ultrasonic welding device includes an anvil on which the overlapping surface of the electrode tab and the electrode lead are disposed. A horn is configured to apply ultrasonic waves to the overlapping surface of the electrode tab and the electrode lead while pressing the overlapping surface. The overlapping surface is disposed on the anvil. An electrode tab measuring part is configured to measure a thickness of the electrode tab disposed on the overlapping surface. A pressure adjusting device is configured to adjust a pressure applied to the overlapping surface by the anvil and the horn according to the thickness value of the electrode tab. The thickness value is measured by the electrode tab measuring part.

Ultrasonic welding device and welding method for secondary battery

An ultrasonic welding device includes an anvil provided so that an overlapping surface of an electrode tab and an electrode lead, which are provided in an electrode assembly, are configured to be disposed thereon; a horn configured to weld the overlapping surface disposed on the anvil; and an inspection member configured to inspect a horizontal level of an opposing member with respect to the overlapping surface, based on an overlapping surface horizontal value that is a horizontal value of the overlapping surface with respect to a predetermined reference surface and an opposing horizontal value that is a horizontal value of the opposing member, which is one of a welding part of the horn configured to face the overlapping surface and a disposing part of the anvil, on which the overlapping surface is configured to be disposed, with respect to the predetermined reference surface.

Secondary battery and ultrasonic welding device and welding method for secondary battery

The present invention relates to a method for inspecting a welding quality of an electrode tab-electrode lead welded portion of a pouch-type lithium secondary battery, and the method includes: recognizing welding traces of the welded portion by a vision inspection device; measuring a size of each of the recognized welding traces; and determining whether the welded portion has been weakly welded, excessively welded or normally welded by comparing the measured size with a reference value.

Method for inspecting welding quality of welded portion between electrode tab and lead

The present technology relates to a method of inspecting a welding defect. The method includes: manufacturing an electrode assembly sample by welding an electrode lead on an electrode tab formed on an electrode assembly; measuring a tensile strength, a torsional strength and a peeling strength of a welded portion between the electrode tab and the electrode lead for the electrode assembly sample; deriving correlation between whether there is a welding defect and each of the tensile strength, the torsional strength, and the peeling strength; and deriving a reference value for determining whether there is a welding defect for the tensile strength, the torsional strength, and the peeling strength, respectively.

Welding defect inspection method

Disclosed are a pouch-shaped battery case including an upper case and a lower case sealed to one another, the upper case and the lower case made of a laminate sheet comprising a metal layer and a resin layer, at least one of the upper case and the lower case having a concave unit for receiving an electrode assembly, the upper case and the lower case being sealed at all corners thereof located along the outer edge of the concave unit, a middle of a first side surface of each of the upper case and the lower case having a non-sealed portion for gas discharge, the first side surface being adjacent to a second side surface of each of the upper case and the lower case through which an electrode terminal extends, a method of manufacturing the pouch-shaped battery case, and a sealing block for manufacturing the pouch-shaped battery case.

Pouch-shaped battery case comprising crack prevention structure and method of manufacturing the same

To solve the above problem, a pouch forming apparatus according to an embodiment of the present invention includes: a die in which a forming space is recessed inward from a top surface thereof; a partition wall partitioning the forming space into first and second forming spaces; a stripper disposed above the die and configured to descend to contact the die with the pouch film therebetween to fix the pouch film to be seated on a top surface of the die; and an electromagnetic force generation part disposed above the forming space and configured to generate electromagnetic force and configured to apply the electromagnetic force to the forming space.

Pouch forming apparatus

An apparatus for manufacturing the secondary battery includes a first measurement part photographing unit cells, which are continuously transferred, to measure a position of a first electrode having a relatively large size of the first electrode and a second electrode, which are provided in the unit cells and have polarities opposite to each other, from an image of each of the photographed unit cells; and a first arrangement part disposing the unit cell passing through the first measurement part at a preset position of the separation sheet to adjust an interval between the unit cells disposed on the separation sheet on the basis of the position of the first electrode, which is measured by the first measurement part.

Apparatus and method for manufacturing secondary battery

Discussed is an apparatus for manufacturing a unit cell of a battery, the apparatus including: a center electrode reel from which a center electrode is unwound; an upper separator reel from which an upper separator laminated on a top surface of the center electrode is unwound; a lower separator reel from which a lower separator laminated on a bottom surface of the center electrode is unwound; and a magnetic force generation part disposed above or below a first laminate to apply magnetic force to the first laminate, the first laminate including the lower separator, the center electrode, and the upper separator that are sequentially laminated.

Apparatus and method for manufacturing unit cell

An alignment inspection apparatus for the electrode assembly including a laminate, in which a first separator, an internal electrode, a second separator, and an upper electrode are sequentially laminated, includes a camera disposed above a central portion of the electrode assembly to photograph and inspect the electrode assembly and side lights obliquely irradiating light onto each of both ends of the upper electrode. The side lights are symmetrical to each other with respect to the central portion of the electrode assembly.

Alignment inspection apparatus for electrode assembly and alignment inspection method for electrode assembly using the same

A device for detecting a crack in a battery cell, comprising: an inspection unit comprising a first sensor inducing an eddy current and a second sensor sensing a signal of the eddy current induced by the first sensor, and performing an inspection of the battery by using the eddy current while the battery cell is driven; a transfer unit for sequentially transferring a plurality of battery cells from a point where the battery cells are introduced to a point where the battery cells are taken out; and a control unit which is electrically connected to the inspection unit and receives, evaluates, and controls the eddy current signal sensed by the inspection unit.

Inspection method for crack in battery cell by using eddy current, and inspection device

A plasma generating apparatus for a secondary battery, including a roller part having a transfer roller configured to transfer a separator and a metal member built in the transfer roller, and a plasma generating part interacting with the metal member to generate plasma and thereby to form a mask that is patterned on a surface of the separator and has a bonding force.

Plasma generating apparatus for secondary battery and lamination system comprising the same

Pouch forming apparatus and method

A unit cell alignment apparatus that includes a base member, on the upper surface of which unit cells constituting an electrode assembly are stacked parallel thereto, a first guide member located at one side of the base member, the first guide member being disposed so as to be perpendicular to the upper surface of the base member, a second guide member located at the base member, the second guide member being disposed so as to be perpendicular to the upper surface of the base member while being at right angles to the first guide member, and an inclination adjustment member configured to adjust the inclination of the base member.

Unit cell alignment apparatus having tiltable and rotatable base member

The present invention relates to an electrolyte removing device. The electrolyte removing device comprises: a jig assembly configured to receive in a seated position a pouch comprising an accommodation part in which an electrode assembly is accommodated, a gas pocket part, and a connection part connecting the accommodation part to the gas pocket part; and an electrolyte removing assembly configured to push an electrolyte remaining on the connection part to the gas pocket part to remove the electrolyte from the connection part.

Electrolyte removing device, apparatus and method for manufacturing secondary battery comprising the same, and secondary battery

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Daejeon, South Korea

Cha Hun Ku